Changing the order of course formats in Site admin > Plugins > course format > Manage course format has no effect on the order in a course Gear > Edit settings > Course format. Will report bug. Steps to recreate in QA but copies here for reference:

Test steps:
1.As admin, navigate to Settings>Site administration>Plugins>Course formats>Manage course formats.
2. Use the arrows to move the course formats so they display as (from top to bottom) Weekly/Social/Topics/Single activity.
3. Log in to the course as a teacher and navigate to Course administration>Edit settings>Format.
4. Verify that the formats display in the order the admin set them to in step (2)
5. Go back to the Manage course formats screen and change the display order to Single activity/Weekly/Topics/Social.
6. Go back into the course as a teacher and verify that the course formats now display in the new order.